The human eye is a miraculous organ that provides the ability to see the world around us through interpretation of light rays. Light is produced by the sun, and when that light hits an object, light rays bounce off. The rays then enter the eye and are refracted in a manner that allows our brains to interpret images. Please see below for an overview of the different parts of the eye, and how they help produced vision.

Cornea – The cornea is the outer layer of tissue that light initially passes through. The cornea is reshaped during LASIK to treat for nearsightedness, farsightedness and astigmatism.

Pupil – The pupil is the black portion of the eye that bends light after it enters the eye.

Iris – The iris regulates the amount of light passing through the pupil by expanding and contracting.

Lens - After the light rays enter the eye, they reach the lens. The lens changes changes shape in order to further bend the light and focus it on the retina.

Retina - The retina rests in the back of the eye and contains millions of light-sensing cells called rods and cones. Cones provide clear, sharp central vision and detect colors and fine details. Rods provide peripheral or side vision. Rods also allow the eyes to detect motion and help us see in dim light and at night.

Optic Nerve - The optic nerve sends impulses to the brain where an image is produced.

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